CFD Study on the Effect of Hydrocyclone Structure on the Separation Efficiency of Fine Particles
學年 97
學期 1
出版（發表）日期 2008-11-01
作品名稱 CFD Study on the Effect of Hydrocyclone Structure on the Separation Efficiency of Fine Particles
作品名稱（其他語言）
著者 黃國楨; Hwang, Kuo-jen; Wu, Wen-hao; Qian, Shaoxiang; Nagase, Youichi
單位 淡江大學化學工程與材料工程學系
出版者 Taylor & Francis
著錄名稱、卷期、頁數 Separation Science and Technology 43(15), pp.3777-3797
摘要 Effects of geometric structure parameters of 10 mm-diameter hydrocyclones on the particle separation efficiency are studied using computational fluid dynamics (CFD). The fluid velocity profiles and particle trajectories are simulated using RFLOW software with a standard isotropic k-ε turbulent model. The JIS standard CaCO3-17 particles are adopted as a particulate sample in simulations and experiments. Comparing the simulated results with experimental data, a maximum deviation about 20% in partition curves occurs for 5-10 µm particles. However, fairly good agreements for the cut-size predictions and the fish-hook phenomenon are obtained. The simulated cut-size d50 is only 2 µm larger than that measured in experiments, while the value of d100 can be accurately predicted. An increase in overflow diameter or a decrease in underflow diameter leads to a lower separation efficiency but a clearer separation sharpness due to lower fluid underflow rate. A short-and-wide rectangular inlet is more efficient for particle separation than a tall-and-narrow one. An inclined inlet conduit plays an inessential role on the efficiency improvement but gains a 2 µm reduction in d100. Comparing the simulated results, the hydrocyclone used in the experiments of this study exhibits a higher separation sharpness than the Rietema type and a higher efficiency than the Bradley type based on the same operation capacity and hydrocyclone size.
關鍵字 CFD;hydrocyclone;particle classification;separation efficiency
語言 en
ISSN 0149-6395
期刊性質 國內
收錄於
產學合作
通訊作者
審稿制度 否
國別 TWN
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50479 )

機構典藏連結